If it's just for the dog, check out one of these type of kennels. We have two, one for each dog, and they love them. Lots of ventilation, etc. We bought extra big since we bought them when our dogs were already adults and we didn't need to keep it small for potty training.
They are MUCH easier to set up than a tent, and mine has tent stake gromits in the corners to stake it down in case of wind. My dogs love them.
We have THIS one:
http://www.westcoastpetsupply.com/2/Noz ... Dog-Crate/
for our dog who is as tall as a Rottie (but half the weight... he's part poodle and has TALL, LONG legs).
They also sell this one that is bigger:
http://www.westcoastpetsupply.com/2/fir ... oft-crate/
I've also seen these pet tents... they have the same set up as a tent, but are much cheaper:
http://www.allpetfurniture.com/ABO-Gear ... rodDetails
http://www.rei.com/product/756702
http://www.sales-innovations.com/cart.p ... &ad=nextag
http://www.revivalanimal.com/store/p/99 ... c311_d_107
As far as human tents, we've had GREAT luck with our Sierra Designs backpacking tent. It's one of the quicker ones to set up I've ever touched, and is in perfect shape after over 10 years of heavy use. It's never leaked (I did and do seal the seams), and hasn't ever blown over in any windstorm (and I've been in some doozies) EXCEPT when staked in sand. The poles and elastic are great. It's a 4 season tent, so it does get a little stuffy in the summer, but I bet the 3 seasons are great.
We had AWFUL luck with a cheaper Coleman tent we bought... it collapsed and the elastic in the stakes broke in the first storm it encountered. A friends did the same a month ago... his was a much nicer Coleman tent.